A little confused about how they work since I am a greenhorn when it comes to stripping wire. Do you insert a razor blade in the clamp for the wire you are stripping of is there something on the backside not seen in the photos. I can see stripping wire at an angle, but the torque might be hard on the pulley. It would also require sharpening and upkeep on the holes. Can you provide a video on how these work for those of us lacking common sense or basic knowledge?
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